Бинарный поиск-2

#include <iostream>
#include <cmath>
#include <vector>
#include <set>
#include <string>
#include <algorithm>
#include <iomanip>
#include <string.h>
using namespace std;
using ll = long long;
using ld = long double;

void co(vector <ll> v){
    for (auto x: v) cout<<x<<'\n';
    cout<<'\n';
}

ld eps = 0.000001;
string A;
void eq(string x){
    string A6 = A.substr(0, 6)
}



int main()
{

    ll a,n;
    cin>>a>>n;
    A = to_string(a);

}